Assembly of new organic-inorganic hybrids based on copper-bis(triazole) complexes and Keggin-type polyoxometalates with different negative charges
Assembly of new organic-inorganic hybrids based on copper-bis(triazole) complexes and Keggin-type polyoxometalates with different negative charges
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DOI：
10.1039/c2ce25747e
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发表时间：
2012-01-01
期刊：
影响因子：
3.1
通讯作者：
Wang, En-Bo
中科院分区：
文献类型：
--
作者：
Hao, Xiu-Li;Ma, Yuan-Yuan;Wang, En-Bo
三种新的基于铜-双的有机-无机杂化化合物（三唑）配合物和具有不同负电荷的Keggin型聚氧丙烯酸盐（POM），[Cu（I）BBTZ]（3）[PMo 12 O 40]（1），[Cu（I）BBTZ][Cu（I）（HBBTZ）（2）][SiMo 12 O 40]中心点2.5H（2）O（2）和[Cu（I）BBTZ]（6）[采用水热法合成了[（SiW_2 W_（10）O_（40））-W-V-O-VI]中心点2 H_（2）O_（3）（BBTZ = 1，4-双（1，2，4-三唑-1-基甲基）苯），并通过元素分析、红外光谱、热重分析、X射线光电子能谱、粉末X射线衍射和单晶X射线衍射进行了表征。化合物1和2具有POM模板的三维主客体超分子骨架结构。化合物3展示了POM支持的3D开放框架。在这三种杂化化合物中，通过引入带不同负电荷的Keggin型多氧阴离子，调控了主客体骨架向开放骨架的结构转变。此外，研究了化合物1-3的电化学性质，所有化合物对亚硝酸根的还原均表现出电催化活性。
Three new organic-inorganic hybrid compounds based on copper-bis(triazole) complexes and Keggin-type polyoxometalates (POMs) with different negative charges, [Cu(I)BBTZ](3)[PMo12O40] (1), [Cu(I)BBTZ][Cu(I)(HBBTZ)(2)][SiMo12O40]center dot 2.5H(2)O (2) and [Cu(I)BBTZ](6)[(SiW2W10O40)-W-V-O-VI]center dot 2H(2)O (3) (BBTZ = 1,4-bis(1,2,4-triazol-1-ylmethyl)benzene), have been hydrothermally prepared and characterized by elemental analyses, IR spectra, TG analyses, XPS spectra, powder X-ray diffraction and single-crystal X-ray diffraction analyses. Compounds 1 and 2 exhibit the POM-templated 3D host-guest supramolecular frameworks. Compound 3 displays a POM-supported 3D open framework. In these three hybrid compounds, the structural transformation from host-guest framework to open framework were modulated by the introduction of Keggin-type polyoxoanions with different negative charges. Moreover, the electrochemical properties of compounds 1-3 were investigated and all these compounds show the electrocatalytic activities towards the reduction of nitrite.